摘要:
laptop: Intel(R) Core(TM) i7 8550U CPU @ 1.80GHz.. Test1: 最后一行:时间(ms) pragma GCC optimize("O2") include using namespace std; int main(int argc, char c 阅读全文
摘要:
题目链接: https://www.lydsy.com/JudgeOnline/problem.php?id=3456 题意: 求出n个点的简单(无重边无自环)无向连通图的个数。($n using namespace std; typedef long long ll; const int ma 阅读全文